Ratio of the genetic variance to the total variance which determines the relationship between phenotype and genotype is known as

The ratio of the genetic variance to the total variance which determines the relationship between phenotype and genotype is known as Heritability.
Heritability is a measure of the proportion of phenotypic variance attributable to genetic variance, and it is an important predictor of the degree to which a population can respond to artificial or natural selection.
It is to conclude how well differences in people's genes account for differences in their traits. Traits can include characteristics such as height, eye colour, and intelligence, as well as disorders like schizophrenia and autism spectrum disorder.